somebody can tell the mean.

Other Hardware Sensors
1

int ultraSoundSignalPins[] = {0,1}; // 2 Ultrasound signal pins
int ultraSoundTriggerPin = 6; // output pin to start Ultrasound signals
int pwm_a = 3;
int pwm_b = 11;
int dir_a = 12;
int dir_b = 13;
unsigned char analogPin = 0;

void setup() {

Serial.begin(9600);
for(int i=0; i < 2; i++) {
pinMode(ultraSoundSignalPins*, INPUT); // Switch signalpin to input*

  • }*
  • pinMode(ultraSoundTriggerPin, OUTPUT); // set this pin to output*
  • //give the sensors time to boot up*
  • delay(250);*
  • // send RX pin high to signal to chain to ping*
  • digitalWrite(ultraSoundTriggerPin, HIGH);*
  • delayMicroseconds(30);*
  • digitalWrite(ultraSoundTriggerPin, LOW);*
  • pinMode(ultraSoundTriggerPin, INPUT); // electrically disconnects the pin*
  • delay(50);*
    this i do not unstander ?
    what it means.
    Serial.begin(9600);
  • for(int i=0; i < 2; i++) {*
    _ pinMode(ultraSoundSignalPins*, INPUT); // Switch signalpin to input*_
    * }*
    * pinMode(ultraSoundTriggerPin, OUTPUT); // set this pin to output*
    * //give the sensors time to boot up*
    * delay(250);*
    * // send RX pin high to signal to chain to ping*
    * digitalWrite(ultraSoundTriggerPin, HIGH);*
    * delayMicroseconds(30);*
    * digitalWrite(ultraSoundTriggerPin, LOW);*
    * pinMode(ultraSoundTriggerPin, INPUT); // electrically disconnects the pin*
    * delay(50);*
2

Two things

  1. go back to that post by hitting modify, select the code, hit the # icon and save.
  2. Can you point out what you don't understand in the code. The Serial.begin just under the arrow is a mistake, it should be removed.
3

What are you asking? What are you trying to accomplish with the code? It looks like you are chaining two Maxbotix ultrasonic sensors. Where is your loop? \http://www.maxbotix.com/downloads.htm There you'll find links to datasheets, quick start guides, etc. If you're more specific with your question, you may get a more specific answer.